Method for foundation consolidation combining vacuum preloading and geomembrane bag assembly loading

A method for consolidating a foundation using vacuum preloading combined with a geomembrane bag device load, comprising:

• excavating a sludge pond, filling the sludge pond with sludge, and performing a plurality of vacuum preloading and drainage treatments;
• laying a geomembrane bag device filled with sludge on top of a soft mud layer in the sludge pond after the plurality of vacuum preloading and drainage treatments to form a load layer, wherein the geomembrane bag device is arranged in a stacked configuration;
• prefabricating a drainage system and a geomembrane bag device for vacuum p reloading and drainage of the soft mud layer;
• using a vacuum preloading method to fill the soft mud layer in the sludge pond with a plurality of layers of sludge, and laying a drainage system for each layer sequentially;
• after the installation of each layer's drainage system is completed, connecting the drainage system to a vacuum pump device and immediately starting the vacuum extraction;
• filling and stacking the geomembrane bag device;
• laying a second vertical drainage board around the sludge pond, and laying a third horizontal drainage board on an upper surface of the geomembrane bag device;
• the second vertical drainage board and the third horizontal drainage board are connected to the vacuum pump device for vacuum extraction and drainage.